I recently came across a 25lb trip hammer made by Mayer that had been in a shop fire. It was locked up and it needs several minor repairs. I managed to get it turning and get most of it apart, however I am having an issue with the drive shaft assembly. While typically Mayer Bros is interchangeable with the Little Giant models, this one has a single piece solid cast body, with no bolt on mounting brackets. This means I cannot simply remove the assembly to change the belt and replace the clutch mesh and bearings. I cannot find any resources online other than the Little Giant models with removable brackets. I don't know if I should be able to remove the flywheel by just pulling it off? It is keyed but no set screw that I can find. Even once I remove the flywheel, the shaft would need to be pounded out or something to remove the clutch assembly. Has anyone else run into this model or one with similar issues? Any advice would be appreciated. I have included pictures of my hammer and the typical Little Giant assembly for reference.